100=(20-x)/2

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Solution for 100=(20-x)/2 equation: 



100=(20-x)/2

We move all terms to the left:

100-((20-x)/2)=0

We add all the numbers together, and all the variables

-((-1x+20)/2)+100=0

We multiply all the terms by the denominator


-((-1x+20)+100*2)=0



We calculate terms in parentheses: -((-1x+20)+100*2), so:

(-1x+20)+100*2

We add all the numbers together, and all the variables

(-1x+20)+200

We get rid of parentheses

-1x+20+200

We add all the numbers together, and all the variables

-1x+220

Back to the equation:

-(-1x+220)



We get rid of parentheses

1x-220=0

We add all the numbers together, and all the variables

x-220=0

We move all terms containing x to the left, all other terms to the right

x=220

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